1999 Audi S8 vs. 1991 Audi V8
To start off, 1999 Audi S8 is newer by 8 year(s). Which means there will be less support and parts availability for 1991 Audi V8. In addition, the cost of maintenance, including insurance, on 1991 Audi V8 would be higher. Both 1999 Audi S8 and 1991 Audi V8 are equipped with a 4,172 cc engine. In terms of performance, 1999 Audi S8 (335 HP @ 7000 RPM) has 55 more horse power than 1991 Audi V8. (280 HP @ 5800 RPM). In normal driving conditions, 1999 Audi S8 should accelerate faster than 1991 Audi V8. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi S8 weights approximately 18 kg more than 1991 Audi V8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1991 Audi V8 (400 Nm @ 4000 RPM) has 69 more torque (in Nm) than 1999 Audi S8. (331 Nm @ 3400 RPM). This means 1991 Audi V8 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8. 1991 Audi V8 has automatic transmission and 1999 Audi S8 has manual transmission. 1999 Audi S8 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1991 Audi V8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi S8 | 1991 Audi V8 | |
| Make | Audi | Audi |
| Model | S8 | V8 |
| Year Released | 1999 | 1991 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4172 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 335 HP | 280 HP |
| Engine RPM | 7000 RPM | 5800 RPM |
| Torque | 331 Nm | 400 Nm |
| Torque RPM | 3400 RPM | 4000 RPM |
| Top Speed | 250 km/hour | 244 km/hour |
| Acceleration 0-100mph | 5.4 seconds | 7.7 seconds |
| Drive Type | AWD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1730 kg | 1712 kg |
| Vehicle Length | 5040 mm | 4880 mm |
| Vehicle Width | 1890 mm | 1820 mm |
| Vehicle Height | 1420 mm | 1430 mm |
| Wheelbase Size | 2890 mm | 2710 mm |
